Master Electrician Practice Exam – Questions With
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Terms in this set (150)
When exceptions are not applicable, D. 3/0 AWG
the MINIMUM size common copper
grounding electrode conductor for a
separately derived alternating current
electrical system with 3, paralleled sets
of size 300 kcmil copper secondary
conductors shall be _________
A. 1/0 AWG
B. 1 AWG
C. 2/0 AWG
D. 3/0 AWG
,Cables or raceways installed using A. be approved for the purpose
directional boring equipment shall
__________
A. be approved for the purpose
B. have a warning ribbon installed
above the cable or raceway
C. not permitted
D. be identified by color coding
Given: 4 size 2/0 AWG conductors C. 17 inches
contained in a 2-inch conduit enter a
pull box on the "east" side. The
conductors then make a U-turn in the
box and go out a 2.5-inch conduit on
the same side. What is the MINIMUM
distance from the "east" side of the box
to the opposite "west" side, in inches?
A. 12 inches
B. 15 inches
C. 17 inches
D. 20 inches
Where a 15-ampere rated general-use C. 12 amperes
AC snap switch is to serve as a
disconnecting means for a stationary
AC electric motor, rated 2 hp or less
and 300 volts or less, the NEC®
requires the MAXIMUM full-load
current rating of the motor to be NO
more than ________
A. 7.5 amperes
B. 10 amperes
C. 12 amperes
D. 15 amperes
,When exceptions are not to be D. 408 volts
considered, the MINIMUM voltage
allowed at the line terminals of a 480-
volt, three-phase, fire pump controller
under motor starting conditions shall
_______
A. 466 volts
B. 456 volts
C. 432 volts
D. 408 volts
Luminaires installed in fountains shall A. 150 volts
be protected by a ground-fault circuit
interrupter and operate at a voltage
NOT to exceed _______
between conductors.
A. 150 volts
B. 120 volts
C. 250 volts
D. 25 volts
, Where a retail shopping mall has A. the service and maintenance are provided by the
multiple tenant spaces, each occupant building management
shall have access to the main
disconnecting means,
EXCEPT when _______
A. the service and maintenance are
provided by the building management
B. there are more than six
disconnecting means provided
C. the primary feeder transformer does
not exceed
600 volts
D.
the secondary of the service
transformer does not exceed 240 volts
to ground
Determine the conductor allowable B. 167 amperes
ampacity given the following
related information:
• ambient temperature of 44°C
• 250 kcmil THWN copper conductors
• four (4) current-carrying conductors
in the raceway
• length of raceway is 30 feet
A. 160 amperes
B. 167 amperes
C. 200 amperes
D. 209 amperes
Expert Verified Answers
Add to calendar
Play your way to mastery with fun games
Match Blocks Charms NEW
Terms in this set (150)
When exceptions are not applicable, D. 3/0 AWG
the MINIMUM size common copper
grounding electrode conductor for a
separately derived alternating current
electrical system with 3, paralleled sets
of size 300 kcmil copper secondary
conductors shall be _________
A. 1/0 AWG
B. 1 AWG
C. 2/0 AWG
D. 3/0 AWG
,Cables or raceways installed using A. be approved for the purpose
directional boring equipment shall
__________
A. be approved for the purpose
B. have a warning ribbon installed
above the cable or raceway
C. not permitted
D. be identified by color coding
Given: 4 size 2/0 AWG conductors C. 17 inches
contained in a 2-inch conduit enter a
pull box on the "east" side. The
conductors then make a U-turn in the
box and go out a 2.5-inch conduit on
the same side. What is the MINIMUM
distance from the "east" side of the box
to the opposite "west" side, in inches?
A. 12 inches
B. 15 inches
C. 17 inches
D. 20 inches
Where a 15-ampere rated general-use C. 12 amperes
AC snap switch is to serve as a
disconnecting means for a stationary
AC electric motor, rated 2 hp or less
and 300 volts or less, the NEC®
requires the MAXIMUM full-load
current rating of the motor to be NO
more than ________
A. 7.5 amperes
B. 10 amperes
C. 12 amperes
D. 15 amperes
,When exceptions are not to be D. 408 volts
considered, the MINIMUM voltage
allowed at the line terminals of a 480-
volt, three-phase, fire pump controller
under motor starting conditions shall
_______
A. 466 volts
B. 456 volts
C. 432 volts
D. 408 volts
Luminaires installed in fountains shall A. 150 volts
be protected by a ground-fault circuit
interrupter and operate at a voltage
NOT to exceed _______
between conductors.
A. 150 volts
B. 120 volts
C. 250 volts
D. 25 volts
, Where a retail shopping mall has A. the service and maintenance are provided by the
multiple tenant spaces, each occupant building management
shall have access to the main
disconnecting means,
EXCEPT when _______
A. the service and maintenance are
provided by the building management
B. there are more than six
disconnecting means provided
C. the primary feeder transformer does
not exceed
600 volts
D.
the secondary of the service
transformer does not exceed 240 volts
to ground
Determine the conductor allowable B. 167 amperes
ampacity given the following
related information:
• ambient temperature of 44°C
• 250 kcmil THWN copper conductors
• four (4) current-carrying conductors
in the raceway
• length of raceway is 30 feet
A. 160 amperes
B. 167 amperes
C. 200 amperes
D. 209 amperes
